CN107727559A - A kind of corrosion testing apparatus and the method using the device - Google Patents
A kind of corrosion testing apparatus and the method using the device Download PDFInfo
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Abstract
A kind of method the invention discloses corrosion testing apparatus and using the device, the device include solution reservoir, catheter, external solution is added to solution reservoir solution add pipe, the first airway tube, the second airway tube, at least one test chamber for placing sample, in output test container reacted solution and gas gas-liquid mixed efferent duct；One end of catheter is inserted into below the liquid level of solution of solution reservoir, the other end is inserted into test chamber, circulating pump is provided with catheter, first airway tube and second airway tube one end are connected with source of the gas respectively, and the other end is respectively protruding under the liquid level of the solution under the liquid level of the solution in solution reservoir and in test chamber.The advantages of device, is：By the solution constant temperature in circulating pump test chamber and it is flow regime, so that the solution in the solution and test chamber at sample interface is consistent, avoids solution from causing local static solution to change due to corrosion.
Description
Technical field
A kind of method the present invention relates to corrosion testing apparatus and using the device.
Background technology
With the sustainable development of Chinese national economy, traditional energy oil, the demand of natural gas are increasing.Country's system
Meter office to China in recent years oil, natural gas year total amount consumed counted, show China's oil, gas consumption year by year significantly
Degree increase, speculates accordingly, to consuming petroleum in the year two thousand twenty China year 600000000 tons, the billion cubic meter of natural gas 3600.Due to the oil of China
With being unevenly distributed for natural gas, from the perspective of geography, oil gas field is mainly distributed on Plain, shallow sea, desert and famine
Overgrown with weeds area, from consumer demand angle, larger to petroleum gas demand is concentrated mainly on population concentration and industry
Flourishing urban area.Industry is transferred to from the oil and natural gas of desert, ocean, Plain and outlying district exploitation and population is close
The city of collection, turn into important transportation means using pipeline transportation, but be accompanied by the exploitation of oil gas field and imported high sulfur crude oil adds
Work amount is continuously increased, and the corrosion failure of Korrosionsmedium has penetrated into the drilling of petroleum gas, conveying and processing industry
In, burn into cracking occurs in corrosive atmosphere for increasing carbon steel and low alloy steel equipment, pressure vessels and pipes.Root
According to the incomplete statistics of the American National delivery safety committee, the results showed that 45% in the damage of U.S.'s pipeline is all due to that corrosion is broken
Caused by bad；DuPont once analyzed the metallic conduit occurred in 4 years and 685 malicious events of equipment, had
Nearly 60% is due to that corrosion causes, increasing producer (such as air bottle steel, valve, flange, petroleum gas drilling-production equipment,
The manufacturer of conveyance conduit) relevant device that clearly claims need to carry out corresponding corrosion test.Existing technology is direct
Gas into test chamber needed for injection corrosion, corrodes required gas and dissolves in the solution in test chamber, until experiment
Terminate, the gas needed for corrosion in testing liquid is constantly in saturation state.Because the solution in test chamber does not flow, this
Sample can cause the factors such as the interface local ph that the sample in test chamber contacts with solution that bad change occurs, and this will drop
The severe of low experiment, influence the science of result of the test.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to solve solution in the prior art and sample circle
The change of face local pH, the problems such as influenceing result of the test accuracy, therefore, the present invention provides a kind of corrosion testing apparatus and using should
The method of device.
A kind of corrosion testing apparatus, including solution reservoir, catheter, external solution is added to the molten of solution reservoir
Liquid add pipe, the first airway tube, the second airway tube, at least one test chamber for placing sample, in output test container instead
The gas-liquid mixed efferent duct of solution and gas after answering；One end of the catheter be inserted into the liquid level of solution of solution reservoir with
Under, the other end is inserted into test chamber, is provided with catheter and the solution in solution reservoir is transported in test chamber
Circulating pump, the test chamber is at the trial sealing shape, first airway tube and second airway tube one end respectively with gas
Source is connected, and the other end is respectively protruding into solution reservoir under the liquid level of solution and in test chamber under the liquid level of solution.
Optimization, the dividing plate that solution reservoir is divided into stoste area and recirculating zone, insertion are installed in the solution reservoir
Solution in solution reservoir adds pipe, catheter, the first airway tube and is located in stoste area, the output of gas-liquid mixed efferent duct
End is in recirculating zone.
Optimization, the backflash flowed to for the solution in recirculating zone in stoste area is offered on the dividing plate.
Optimize, in addition to the 3rd airway tube, the 3rd airway tube are located at the port structure of the air zone on stoste area top
Into inlet end, the port in recirculating zone, which is then deep into solution, forms outlet side.
Optimization, the first throttle whether control gas is flowed into solution reservoir is provided with first airway tube
Valve, the second throttle whether control gas is flowed into test chamber is provided with the second airway tube, is provided with catheter
Whether control gas is flowed into the 3rd choke valve in test chamber.
Optimization, in addition to tail gas absorber, the 4th the airway tube air zone that is located at recirculating zone top port form into
Gas end, the port in tail gas absorber, which is then deep into solution, forms exhaust end.
Optimize, in addition to solution sampling box, sampling T-way pipe, the solution sampling box pass through sampling T-way pipe and drain
Pipe is connected, and the 4th choke valve is additionally provided between the sampling T-way pipe and solution sampling box.
Optimize, in addition to thermostat, solution temperature, pH testing cassetes, the solution reservoir are arranged in thermostat, institute
State solution temperature, pH testing cassetes are arranged on gas-liquid mixed efferent duct.
Optimization, in addition to air guide three-way pipe, drain three-way pipe gas-liquid mixed three-way pipe, main gas tube, the experiment appearance
Device is multiple, and second airway tube includes more, and first airway tube, the second airway tube pass through air guide three-way pipe and master
Airway tube connects；The drain three-way pipe that solution shunt is input to each test chamber is provided with the catheter, it is described every
It is provided with the gas-liquid mixed three-way pipe of gas-liquid mixture interflow output on gas-liquid mixture efferent duct on individual test chamber.
Optimization, the gas-liquid mixed efferent duct is thick compared with airway tube and catheter, the flow velocity of liquid on loop is reduced, to subtract
Few its washes away to solution reservoir recirculating zone.
A kind of method using above-mentioned constant temperature corrosion testing apparatus, device also include solution sampling box, sampling T-way pipe,
Control gas is provided with first airway tube and whether is flowed into first throttle valve in solution reservoir, on the second airway tube
It is provided with the second throttle whether control gas is flowed into test chamber；The solution sampling box by sampling T-way pipe with
Catheter connects, and is additionally provided with whether control solution enters solution sampling box between the sampling T-way pipe and solution sampling box
The 4th interior choke valve；Its step is as follows：
S1, cleaned sample is put into test chamber, then leakage test container；
S2, source of the gas is opened, held respectively to corresponding solution reservoir and experiment by the first airway tube and the second airway tube
Inert gas is passed through in device, until oxygen content reaches certain threshold value in the solution in solution reservoir and test chamber, closes gas
Source；
S3, the solution for removing peroxide is injected into solution reservoir by solution addition pipe；Open the circulation pump so that solution is noted
Full test chamber；
S4, open source of the gas, open the circulation pump, again by the first airway tube and the second airway tube respectively to corresponding solution
It is passed through inert gas in reservoir and test chamber, oxygen content reaches certain threshold in the solution in test chamber and solution reservoir
During value, source of the gas will switch to gas needed for experiment from inert gas；Until solution in experiment needed for gas reach saturation, adjust
The second throttle in first throttle valve and the second airway tube on first airway tube, reduce the gas flow needed for experiment and cause
Gas needed for experiment in solution reservoir and test chamber in solution is constantly in saturation state；In this step can be with
The 4th choke valve is opened, solution closes the 4th choke valve after passing into solution sampling box, and tests solution parameters；
When S5, off-test, solution parameters are tested, gas needed for the experiment of input is then switched into indifferent gas
Body, until gas needed for experiment reaches certain threshold value in solution, stop ventilation, open test chamber and take out sample.
The advantage of the invention is that：
(1) present invention by circulating pump by gas-saturated solutions needed for the experiment in solution reservoir always toward test chamber
Interior conveying so that solution is filled with test chamber, and pressure-fired is formed in test chamber, so as to prevent oxygen during experiment
The entrance of gas, and test chamber is provided with gas-liquid mixed efferent duct, and the solution in such test chamber is flow regime, so as to
The solution in solution and test chamber at sample interface can be caused to be consistent, avoided because corrosion causes part static molten
Liquid changes, so as to improve test effect.
(2) thermostat provides suitable environment for experiment in the present invention, and sets solution reservoir to also have other benefits,
When having several test chambers while testing, also only need a thermostat to can be achieved with constant temperature effect, reduce experiment into
This, the invention by the constant temperature solution in solution reservoir, is constantly injected into test chamber by circulating pump, examination is realized with this
Temperature in container is tested to fluctuate within the acceptable range.
(3) setting of backflash can recycle solution on the setting of the invention dividing plate and dividing plate, ensure that experiment
During to the demand of amount of solution outside, it is not necessary to obtain substantial amounts of solution from outside, saved resource.
(4) because reacted solution is to flow to stoste area from recirculating zone by backflash in the invention, in order to improve
Reacted solution turns into the speed that can reuse solution and ensures that the pressure in stoste area and recirculating zone is in poised state,
Gas flows to recirculating zone by the 3rd airway tube from stoste area, realizes liquid and is flowed by backflash from recirculating zone to stoste area
Dynamic, gas is flowed by the 3rd airway tube from stoste area to recirculating zone.
(5) choke valve set in the present invention, can control gas and liquid in solution reservoir and test chamber in real time
Flow velocity, improve the accuracy of experiment, also save the energy.
(6) setting of tail gas absorber can be prevented from testing required gas entering in atmospheric environment and caused in the present invention
Environmental pollution.
(7) present invention in solution sampling box and the 4th choke valve setting, can be circulated in solution state information,
And ensure that the cyclic part of whole device is sealing state during experiment.
(8) quantity of test chamber can be multiple in the present invention, and so multiple samples can be tested simultaneously, and
And it ensure that the uniformity of environment.
Brief description of the drawings
Fig. 1 is a kind of structural representation of corrosion testing apparatus of the present invention.
Each part is described as follows in figure：
1- solution reservoir 107- stostes areas 108- recirculating zones 2- thermostat 3- main gas tubes
The airway tubes of the 3rd airway tube 34- of 31- the first airway tube 32- the second airway tube 33- the 4th
4- catheter 5- solution adds pipe 6- circulating pump 7- solution sampling boxes
8- test chamber 9- dividing plate 91- backflashes
The choke valves of 101- first throttle valve 102- second throttle 103- the 3rd
The choke valves of the 4th choke valve 105- of 104- the 5th
11- gas-liquid mixed efferent duct 12- solution temperature testing cassete 13- tail gas absorbers
14- sampling T-way pipe 15- sample 16- glass bar 17- filter screen 18- capillaries
20- air guide three-way pipe 21- drain three-way pipe 22- gas-liquid mixed three-way pipes
Embodiment
Embodiment 1
As shown in figure 1, a kind of corrosion testing apparatus, including solution reservoir 1, thermostat 2, main gas tube 3, the first air guide
Pipe 31, the second airway tube 32, the 3rd airway tube 33, the 4th airway tube 34, catheter 4, external solution is added to solution storage
The solution of device 1 add pipe 5, solution sampling box 7, test chamber 8, in output test container 8 reacted solution and gas gas
Liquid mixing efferent duct 11, solution temperature testing cassete 12, tail gas absorber 13, sampling T-way pipe 14, air guide three-way pipe 20, drain three
Siphunculus 21, gas-liquid mixed three-way pipe 22.During experiment, sample 15 is placed in test chamber 8.In this programme, experiment is held
Device 8 is at least one.
One end of catheter 4 is inserted into below the liquid level of solution of solution reservoir 1, and the other end is inserted into test chamber 8,
Be provided with the circulating pump 6 solution in solution reservoir 1 being transported in test chamber 8, the test chamber 8 on catheter 4
Gas is inputted for sealing shape, described one end of first airway tube, 31 and second airway tube 32 at the trial, the other end is respectively protruding into
In solution reservoir 1 under the liquid level of solution and test chamber 8 in solution liquid level under.Test chamber 8 is extend into this programme
Interior the second airway tube 32, catheter 4 are deep into the bottom of test chamber 8, the gas being input in test chamber 8 and liquid warp
Cross after sample and just exported from gas-liquid mixed efferent duct 11, the gas and liquid in such test chamber 8 are flow regime, can be to prevent
Only the surface of sample 15 causes topical solutions at sample interface to change due to chemically reacting, so as to improve test effect.Gas
Liquid mixing 11 pipelines of efferent duct are thicker, to reduce the flow velocity of withdrawing fluid, reduce its washing away to recirculating zone 108.
Include one or more samples 15 in wherein each test chamber 8, if there are multiple samples 15, sample 15 can pass through glass
Glass rod 16 is fixed, and multiple samples 15 are arranged side by side and leave space between each two sample 15.So be advantageous to the solution of flowing
Fully contacted with sample 15, more conducively the flowing of solution.The fixation of the sample 15 is not limited to glass bar, can use other non-gold
Belong to material to make, sample 15 is also not necessarily limited to placed side by side, it is also an option that other placement forms, such as annular is placed.
In order to realize recycling for solution, it is provided with solution reservoir 1 and solution reservoir 1 is divided into stoste area 107
With the dividing plate 9 of recirculating zone 108, the solution being inserted into solution reservoir 1 adds pipe 5, the airway tube 31 of catheter 4 and first is located at
In stoste area 107, the output end of gas-liquid mixed efferent duct 11 is located in recirculating zone 108.Offered on dividing plate 9 for recirculating zone 108
Interior solution flows to the backflash 91 in stoste area 107.Wherein backflash 91 is located at below the liquid level of recirculating zone 108, thus
Resource need not be saved, specifically, backflash in this embodiment from outside always toward injection solution in solution reservoir 1
91 are arranged on the bottom in solution reservoir 1 so that the effect that recirculating zone 108 is back to stoste area 107 is more preferable.Wherein solution is store
Storage 1 is sealing shape.
Circulating pump 6 in said structure not only promotes circulating for solution, also makes to be in pressure-fired in test chamber 8
State, prevent the entrance of oxygen.
Optimization, capillary 18 is provided with the catheter 4 below circulating pump 6, during guarantee test
The gas needed for experiment in solution is saturation.After circulating pump 6 starts, liquid flows in catheter 4, in stoste area 107
Gas needed for the experiment in portion is entered in catheter 4 by the siphonic effect of capillary 18, and wherein circulating pump 6 includes impeller, in leaf
The dissolution velocity of gas needed for experiment is added under the agitation of wheel, the cooperation of circulating pump 6 and capillary 18, which ensure that, to be input to often
Solution in individual test chamber 8 is gas saturation needed for experiment, gas needed for undissolved experiment can in the test chamber 8 after
Continuous dissolving.
The port that 3rd airway tube 33 is located at the air zone on the top of stoste area 107 forms inlet end, in recirculating zone 108
Port be then deep into solution and form outlet side, turn into the speed for the solution that can be reused to improve reacted solution
Poised state is in the pressure ensured in stoste area 107 and recirculating zone 108, gas passes through the 3rd airway tube 33 from stoste area
Flowed in 107 in recirculating zone 108, realize liquid and flow by backflash 91 to enter from recirculating zone 108 to stoste area 107
OK, and gas flowed from stoste area 107 to recirculating zone 108 can only by the 3rd airway tube 33 carry out state.During work, due to
The pressure of the gas in stoste area 107 can be higher than the gas pressure intensity of recirculating zone 108, while gas needed for guarantee test is pressure-fired
Promote the dissolving of gas needed for experiment.
In order that gas-liquid mixed efferent duct 11 flows to the corrosion product of recirculating zone 108 and gas separation, in this scenario, backflow
Being horizontally disposed with area 108 has two layers of screen pack 17, and the output end of gas-liquid mixed efferent duct 11 is located on the liquid level of recirculating zone 108
Side, the obstruction of screen pack 17 are isolated corrosion product and entered in stoste area 107.Screen pack 17 is ventilative, permeable, ensures lower floor's solution
Degree of purity.Stoste area 107 and recirculating zone 108 or so are set, and the level height of backflash 91 is less than the screen pack 17 of lower floor, this
The corrosion product that sample can prevent from isolating is flowed into stoste area 107.
Environmental pollution is caused in air in order to prevent gas needed for the experiment of non-pass into solution from entering, the embodiment is by
One end of four airway tubes 34 is located in recirculating zone 108 in the gas blanket of ullage, and the other end is inserted into tail gas absorber 13
Liquid level below, tail gas absorber 13 just absorbs to the gas that is overflowed from solution reservoir 1, purified so that finally from tail gas
Innocuous gas is exported in absorber 13.
The first throttle valve 101 whether control gas is flowed into solution reservoir 1 is provided with first airway tube 31, it is molten
Liquid, which is added on pipe 5, is provided with the 5th choke valve 105, and the second airway tube 32 is provided with whether control gas is flowed into test chamber 8
Interior second throttle 102, the 3rd choke valve whether control solution is flowed into test chamber 8 is provided with catheter 4
103.Second airway tube 32 include more, first airway tube 31, the second airway tube 32 by air guide three-way pipe 20 with
Main gas tube 3 connects.The drain three-way pipe 21 that solution shunt is input to each test chamber 8 is provided with the catheter 4,
The 3rd choke valve 103 is provided with catheter 4 after shunting, in control gas flow which test chamber 8.Each experiment is held
The gas-liquid mixed three-way pipe 22 of gas-liquid mixture interflow output will be exported by being provided with gas-liquid mixture efferent duct 11 on device 8.
Solution state information in needing to be circulated during experiment, and require to ensure that experimental enviroment is maintained at sealing shape
Solution sampling box 7 is connected by state, the present embodiment by sampling T-way pipe 14 with catheter 4, in this scenario sampling T-way pipe 14
Positioned at the downstream of circulating pump 6.The 4th choke valve 104 is additionally provided between sampling T-way pipe 14 and solution sampling box 7.Work as needs
During sampling, the 4th choke valve 104 is opened, solution shunts a part from catheter 4 and is transported in solution sampling box 7, closes the 4th
Choke valve 104, open solution sampling box 7 and obtain solution, solution can be tested needed for gas content measure.
Because corrosion test typically has certain temperature requirement, test temperature relies primarily on environment temperature maintenance, existing
Technology is to realize the temperature in test chamber 8 in the range of standard requirement by controlling environment temperature, relative to existing skill
Art, this programme can reduce experimentation cost, and not need substantial amounts of energy to maintain the temperature of environment.Solution reservoir 1 is set
Put in thermostat 2.Wherein thermostat 2 uses constant water bath box, such easy control of temperature and operation letter in the present embodiment
It is single.Temperature has loss after entering test chamber 8 due to liquid, and the temperature at gas-liquid mixed efferent duct 11 is not less than experiment temperature
When spending lower limit, you can ensure that the temperature of a whole set of experimental rig is not less than the requirement of standard, so by solution temperature, pH testing cassetes 12
It is arranged on gas-liquid mixed efferent duct 11 and close to solution reservoir 1.If the temperature that solution temperature testing cassete 12 detects is low
In setting value, then show, energy is unable to make ends meet in test chamber 8, you can increase the flow of circulating pump to solve problem.By setting
Put solution temperature test device in the loop, the temperature in continual detection test chamber, in solution temperature testing cassete 12
Warning device can also be set, when temperature reaches setting value lower limit, device automatic alarm.
PH value on-line measuring device is also provided with solution temperature, pH testing cassetes 12, the pH value in solution can be detected in real time,
During experiment, if exception occurs in pH value ascendant trend, show that hydrogen ion consumption is too fast in solution, so as to control increase to try
The increment of gas needed for testing, the hydrogen ion in make-up solution, avoids test failure.When using multiple experiment containers, it is not required to
The test parameters in each independent experiment container is monitored, significantly reduces workload.
Embodiment 2
A kind of method using constant temperature corrosion testing apparatus as described in Example 1, in this embodiment, resistance against hydrogen cracking
The gas that aptitude tests use is the gas of hydrogen sulfide, and inert gas uses nitrogen.Its step is as follows：
S1, cleaned sample 15 is put into test chamber 8, then leakage test container 8.
S2, open source of the gas, be passed through nitrogen into solution reservoir 1 and test chamber 8, the purpose for being passed through nitrogen be in order to except
The oxygen gone in solution, until the solution oxygen content in solution reservoir 1 and test chamber 8 reaches threshold value, close source of the gas.Tool
Body, the flow that nitrogen is passed through is per liter capacity 100mL per minute, is passed through at least 1h.This process oxygen content is more less than threshold value
Test effect is better.
S3, the solution for removing oxygen is injected into solution reservoir 1 by solution addition pipe 5；Open the circulation pump 6 so that
Solution fills test chamber 8；Thermostat 2 is opened, ensures that the solution of circulation is in range of set value；Specifically, in thermostat 2
Temperature setting in 25 ± (0~3) DEG C.
S4, source of the gas to be opened, be passed through nitrogen deoxygenation again, wherein flow is passed through at least 1h per liter capacity 100mL per minute,
Nitrogen is switched into hydrogen sulfide gas when the oxygen content of test chamber 8 and the solution in solution reservoir 1 reaches threshold value；Flow is every
Liter capacity 200mL per minute, ventilate 1h, until the hydrogen sulfide gas saturation in solution, adjusts first on the first airway tube 31
Second throttle 102 on the airway tube 32 of choke valve 101 and second causes in solution reservoir 1 and test chamber 8 in solution
Hydrogen sulfide gas is constantly in saturation state；The 4th choke valve 104 can be opened in this step, and solution enters solution sampling
The 4th choke valve 104 is closed after box 7, and tests solution；The temperature and pH situations of solution are monitored during experiment in real time, there is exception
Adjustment in time.
When S5, off-test, pH value, temperature and the hydrogen sulfide content of solution are tested, then by the hydrogen sulfide gas of input
Nitrogen is switched to, until hydrogen sulfide gas reaches lowest threshold, specifically operation is flow every liter capacity 100mL per minute, is led to
Gas at least 1h, stop ventilation, open test chamber 8 and take out sample 15.
Nitrogen can be replaced with other inert gases in example 2, first throttle valve 101, second throttle 102,
Three choke valves 103, the 4th choke valve 104, the 5th choke valve 105 can control manually, be electrically-controlled valve in the present embodiment.
The preferred embodiment of the invention is these are only, is not intended to limit the invention creation, it is all in the present invention
All any modification, equivalent and improvement made within the spirit and principle of creation etc., should be included in the guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of corrosion testing apparatus, it is characterised in that added including solution reservoir (1), catheter (4), by external solution
Solution to solution reservoir (1) adds pipe (5), the first airway tube (31), the second airway tube (32), at least one places examination
The gas-liquid mixed efferent duct (11) of reacted solution and gas in the test chamber (8) of sample (15), output test container (8)；
One end of the catheter (4) is inserted into below the liquid level of solution of solution reservoir (1), and the other end is inserted into test chamber (8)
It is interior, be provided with the circulating pump (6) solution in solution reservoir (1) being transported in test chamber (8), institute on catheter (4)
It is at the trial sealing shape to state test chamber (8), first airway tube (31) and the second airway tube (32) one end respectively with gas
Source connects, and the other end is respectively protruding into the liquid of the solution under the liquid level of the solution in solution reservoir (1) and in test chamber (8)
Under face.
2. a kind of corrosion testing apparatus according to claim 1, it is characterised in that installed in the solution reservoir (1)
Solution reservoir (1) is divided into the dividing plate (9) of stoste area (107) and recirculating zone (108), is inserted into solution reservoir (1)
Solution adds pipe (5), catheter (4), the first airway tube (31) and is located in stoste area (107), gas-liquid mixed efferent duct (11)
Output end is located in recirculating zone (108).
3. a kind of corrosion testing apparatus according to claim 1 or 2, it is characterised in that offer confession on the dividing plate (9)
Solution in recirculating zone (108) flows to the backflash (91) in stoste area (107).
4. a kind of corrosion testing apparatus according to claim 3, it is characterised in that also including the 3rd airway tube (33), institute
The port for stating the air zone that the 3rd airway tube (33) is located at stoste area (107) top forms inlet end, in recirculating zone (108)
Port be then deep into solution and form outlet side.
5. a kind of corrosion testing apparatus according to claim 1, it is characterised in that set on first airway tube (31)
Have whether control gas is flowed into the first throttle valve (101) in solution reservoir (1), the second airway tube is provided with control on (32)
Whether gas processed is flowed into the second throttle (102) in test chamber (8), control solution is provided with catheter (4) whether
The 3rd choke valve (103) being flowed into test chamber (8).
6. a kind of corrosion testing apparatus according to claim 2, it is characterised in that also including tail gas absorber (13),
The port that four airway tubes (34) are located at the air zone on recirculating zone (108) top forms inlet end, in tail gas absorber (13)
Port be then deep into solution and form exhaust end.
7. a kind of corrosion testing apparatus according to claim 1, it is characterised in that also including solution sampling box (7), sampling
Three-way pipe (14), the solution sampling box (7) are connected by sampling T-way pipe (14) with catheter (4), the sampling T-way pipe
(14) the 4th choke valve whether control solution is entered in solution sampling box (7) is additionally provided between solution sampling box (7)
(104)。
8. a kind of corrosion testing apparatus according to claim 1, it is characterised in that also including thermostat (2), solution temperature
Degree, pH testing cassetes (12), the solution reservoir (1) are arranged in thermostat (2), the solution temperature, pH testing cassetes (12)
It is arranged on gas-liquid mixed efferent duct (11).
9. a kind of corrosion testing apparatus according to claim 1, it is characterised in that also including air guide three-way pipe (20), lead
Liquid three-way pipe (21) gas-liquid mixed three-way pipe (22), main gas tube (3), the test chamber (8) are multiple, second air guide
Managing (32) includes more, and first airway tube (31), the second airway tube (32) pass through air guide three-way pipe (20) and leading gas
Manage (3) connection；The drain three-way pipe that solution shunt is input to each test chamber (8) is provided with the catheter (4)
(21), it is provided with the gas-liquid mixture efferent duct (11) on each test chamber (8) and collaborates to export by gas-liquid mixture
Gas-liquid mixed three-way pipe (22).
10. a kind of method of constant temperature corrosion testing apparatus using as described in claim 1-9 any one, it is characterised in that
Device also includes solution sampling box (7), sampling T-way pipe (14), control gas is provided with first airway tube (31) whether
The first throttle valve (101) being flowed into solution reservoir (1), is provided with whether control gas flows on the second airway tube (32)
To the second throttle (102) in test chamber (8)；The solution sampling box (7) passes through sampling T-way pipe (14) and catheter
(4) connect, be additionally provided between the sampling T-way pipe (14) and solution sampling box (7) and control whether solution enters solution and take
The 4th choke valve (104) in sample box (7)；Its step is as follows：
S1, cleaned sample (15) is put into test chamber (8), then leakage test container (8)；
S2, open source of the gas, by the first airway tube (31) and the second airway tube (32) respectively to corresponding solution reservoir (1) and
Inert gas is passed through in test chamber (8), until the solution oxygen content in solution reservoir (1) and test chamber (8) reaches
Threshold value, close source of the gas；
S3, the solution that pipe (5) injection into solution reservoir (1) removes peroxide is added by solution；Open the circulation pump (6) so that
Solution fills test chamber (8)；
S4, open source of the gas, open the circulation pump (6), again by the first airway tube (31) and the second airway tube (32) respectively to right
Inert gas deoxygenation is passed through in the solution reservoir (1) and test chamber (8) answered, test chamber (8) and solution reservoir (1) are interior
The oxygen content of solution when reaching threshold value source of the gas inert gas will be switched to gas needed for corrosion test；Until in solution
Gas needed for corrosion test reaches saturation, the second throttle (102) closed on the second airway tube (32), adjusts the first airway tube
(31) gas flow needed for the experiment of the first throttle valve (101) on causes the corrosion test in solution reservoir (1) interior solution
Required gas is constantly in saturation state；The 4th choke valve (104) is opened in this step, and solution passes into solution sampling
Box (7) closes the 4th choke valve (104) afterwards, and tests solution parameters；
When S5, off-tests, solution parameters are tested, the gas needed for the experiment of input is then switched into inert gas,
Until gas needed for corrosion test reaches lowest threshold in solution, stop ventilation, open test chamber (8) and take out sample (15).
Priority Applications (1)
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| CN108627451A (en) * | 2018-04-26 | 2018-10-09 | 深圳大学 | A kind of tester for simulating the effect of multi-state littoral environment |
| CN113075355A (en) * | 2020-01-03 | 2021-07-06 | 中国石油化工股份有限公司 | Multifunctional corrosion inhibitor testing device and testing method thereof |
| CN114522648A (en) * | 2022-04-08 | 2022-05-24 | 攀枝花攀钢集团设计研究院有限公司 | Mixing reactor for automatically and rapidly mixing solution and construction method |
| CN114804920A (en) * | 2021-01-18 | 2022-07-29 | 江苏科沛达半导体科技有限公司 | Novel high-temperature phosphoric acid etching machine and control mode thereof |
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| CN114804920A (en) * | 2021-01-18 | 2022-07-29 | 江苏科沛达半导体科技有限公司 | Novel high-temperature phosphoric acid etching machine and control mode thereof |
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| CN114522648A (en) * | 2022-04-08 | 2022-05-24 | 攀枝花攀钢集团设计研究院有限公司 | Mixing reactor for automatically and rapidly mixing solution and construction method |
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